PULMONATA. if 



Fam. 3. TESTACELLID^. 



Teeth numerous, conical, distant, in diverging cross series on 

 a broad lingual membrane. Mouth proboscis-like. Jaws none. 

 Shell spiral or subspiral, external, on the hinder pai't of the body. 

 Operculum none. 



TestacelUdffi, Gray, Ann. Sf Mag. N. H. 1833. 

 TestaceUina, Gray, Proc. Zool. Soc. 1847, 170. 

 Ancylidia, part., Rajin. Anal. Nat. 143, 1815. 



Synopsis of Genera. 



a. Body subspiral ; labial tentacles small. 



1. Testa CELLUS. Shell ear-shaped. 



2. Plectrophorus. Shell conical. 



b. Body spiral J labial tentacles elongate, contractile. 



3. Oleacina. Shell fusiform. Pillar smooth. 



a. Body subspiral J labial tentacles small. 



1. TESTACELLUS. 



Shell small, ear-shaped, subspiral ; mouth very large. Animal 

 elongate, ])roduced in front, with a groove on each side of the back. 

 Mantle and shell on the hinder end of the back ; mantle usually 

 the same size as the shell (but capable of great extension so as to 

 cover the rest of the body). Teeth pin-shaped, shghtly curved, 

 with a roundish head and acute tip, only attached by a small 

 subcentral roundish process (see page 3, fig. 1). 



Limaces a coquilles, Favanne, Conch, i. 429 ; Zoom. 76. f. A. 

 Testacelle (Testacella), Cuvier, Leg. d'Anat. Comp. i.t. 5, 1800 ; 

 Ann. Mus. v. 435 ; Mem. Moll. xii. ; Reg. Anim. ii. 403. 



Lamk. Sy.ft. A. s. V. 96. 



Drap. Tabl. 99 ; Hist. 23, 30, 221. 



Blainv. Man. Malac. 463. 



Philippi, Handb. Conch. 240. 

 Testacellus, Faure-Biguet, Bull. Soc. Phil. n. 61, 1802. 



Montf. Conch. Syst. ii. 94. 



Ferussac, Tab. Syst. ii. 26. 96 »; Hist. Moll. 



Menke, Syn. 1828, 13, 1830. 



B 5 



